List of top Chemistry Questions on Trends in periodic table

Given below are two statements:
Statement I: The metallic radius of Al is less than that of Ga.
Statement II: The ionic radius of Al\(^{3+}\) is less than that of Ga\(^{3+}\).
In the light of the above statements, choose the most appropriate answer from the options given below:
Among 2nd period elements, correct electronegativity trend is:
Which of the following is a non-metal?
Which of the following has the greatest electronegativity?
The acidic character of the oxides increases in the order:
Which of the following elements has the highest electronegativity?
Which of the following order of ionic radii is correctly represented?
The correct statements from the following are:
(A) The decreasing order of atomic radii of group 13 elements is Tl $>$ In $>$ Ga $>$ Al $>$ B.
(B) Down the group 13 electronegativity decreases from top to bottom.
(C) Al dissolves in dil. HCl and liberate H$_2$, but conc. HNO$_3$ renders Al passive by forming a protective oxide layer on the surface.
(D) All elements of group 13 exhibits highly stable +1 oxidation state.
(E) Hybridisation of Al in [Al(H$_2$O)$_6$]$^{3+}$ ion is sp$^3$d$^2$.
Choose the correct answer from the options given below.
Given below are two statements:
Statement I: The metallic radius of Na is 1.86 Å and the ionic radius of Na$^+$ is lesser than 1.86 Å.
Statement II: Ions are always smaller in size than the corresponding elements.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Both rhombic and monoclinic sulphur exist as S$_8$ while oxygen exists as O$_2$.
{Reason (R): Oxygen forms $p\pi$-$p\pi$ multiple bonds with itself and other elements having small size and high electronegativity like C, N, which is not possible for sulphur.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match the following: 

Given below are two statements :
Statement I : The decrease in first ionization enthalpy from B to Al is much larger than that from Al to Ga.
Statement II : The d orbitals in Ga are completely filled. In the light of the above statements,
choose the most appropriate answer from the options given below
The correct order of covalent radii of Si, Ge, Sn is:

The number of following pairs of elements which exhibit diagonal relationship is:

  • i. B & Si
  • ii. Be & Al
  • iii. Li & Mg
  • iv. Al & S
The correct order of atomic radii of B, Be, N and C is
Consider the elements Ne, Na, Mg. The element with highest first ionization enthalpy and element with lowest second ionization enthalpy respectively are
The group number of the element in the periodic table with the electronic configuration $(n - 1)d^2 ns^2$. For $n = 4$ is:
Which of the following represents the correct order of electronegativity among halogens?
The correct decreasing order of basicity of hydrides of Group - 15 elements is
Which of the following is CORRECT with respect to melting point of a transition element?
The correct order of first ionisation enthalpy of given elements is

Match List -I with List-II

LIST-I (Atomic number)LIST-II (Block of periodic table)
(A) 37 (K)I. p-block
(B) 78 (Pt)II. d-block
(C) 52 (Te)III. f-block
(D) 65 (Tb)IV. s-block

Choose the correct answer from the options given below:

Doping of silicon (Si) with indium (In) leads to the formation of
Which is the least electronegative element among the following?

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: The first ionization enthalpy for oxygen is lower than that of nitrogen.
Reason R: The four electrons in 2p orbitals of oxygen experience more electron-electron repulsion.
In the light of the above statements, choose the correct answer from the options given below.